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This package contains the broad and narrow phase collision algorithms.
Externally useful classes are:
<UL>
	<LI>AABB
	<LI>ShapeDef
	<LI>Shape
	<LI>CircleDef
	<LI>CircleShape
	<LI>PolygonDef
	<LI>PolygonShape
</UL>
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